Vitamin D is actually not a vitamin, but a hormone. Vitamins we get from food and hormone D is formed in our skin by sunlight. That part of the vitamin D we get from the normal food does not matter.
In its structure, vitamin D is similar to steroid hormones such as estradiol and cortisol.
The conversion of vitamin D
In the skin on exposure to sunlight turns cholecalciferol. Thereof liver obtained calcidiol. In the kidneys of calcidiol, an active form of the hormone - calcitriol. Calcitriol acts on most of the cells in our body and regulates many different processes.
The active form of vitamin D helps calcium absorbed in the intestine, does not allow him to leak through the kidneys and strengthens bones. This is usually vitamin D and take. But in addition to the action on the bone he had many other effects.
muscles
In large doses, vitamin D increases the power of the large muscles of the legs and arms. It is noticeable, but not important enough to swallow large doses.
the risk of falls
If elderly people had a lack of vitamin D, the usual daily dose may reduce the risk of falls.
Crayfish
It appears that a lack of vitamin D increases the risk of breast cancer in postmenopausal women.
Lack of vitamin A can lead to disturbances in the immune system, autoimmune diseases, heart problems and depression.
Vitamin D is difficult to poison, but if you try, you can. It shall take all and sundry with or without cause. In the foggy England, for example, set a goal to feed all the citizens of 400 IU of vitamin D daily.
Because vitamin D - it is rather a hormone D, they engaged in endocrinology. Therefore ask about this vitamin endocrinologist and do not experiment at home.
